I recently had an issue with my 05 blob ticking over high then hunting revs turned out to be idle control valve, this was cleaned and replaced with new gasket problem sorted but by Carnetix.
Currently have an intermittent tick over issue when warm on our jdm wagon, I've been advised to change the maff 1st, problem is it is an orange label 1 and having trouble sourcing without being robbed. YouTube show how to re solder the connections as the post claims this often solves the issue, haven't had time to check this out so cannot comment.
Hope you get it sorted
